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For every access by TULIP the response for each landmark is logged. We analyze this logging information and generate a list containing nodes with corresponding success or failure percentages and reasons of their failures. These percentages are generated by /afs/slac/package/pinger/tulip/tulip-log-analyze.pl and the results can be seen here. The idea is that landmarks with a low success rate should be removed from the active list of landmarks. This is done by disabling the entry in the tulip database.
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